VIDEO: Where Have The Fuel Pump Filters Gone?
Andrew Markel discusses how to diagnose a fuel pump, and the importance of replacing the entire module if the pump is failing. Sponsored by Auto Value and Bumper to Bumper.
The Next Evolution Of Fuel Injection
You may soon see a vehicle that has both direct fuel injection and port fuel injection. It could be a Toyota, Ford or other make. It can be confusing because for a long time we were told that direct fuel injection was better than port fuel injection. To get the best power and economy from an engine, some engineers realized that both injection systems could be used on the same engine.
Fuel Pump Codes And Control: Keeping Pressure In The Zone
Since the fuel pump module needs information for various sensors, it usually communicates on a serial data bus. If modules are not communicating, the fuel pump can’t be adequately controlled. The key to investigating these problems is to communicate with different modules to see what data PIDs are present and which ones are missing.
Direct Injection Logic: How The High-Pressure Fuel Pump Solenoid Works
A direct injection fuel pump can’t increase its speed independent of the engine to increase it’s output or pressure, so it has to control the volume of fuel that is compressed. This relationship is what makes direct injection high-pressure fuel pumps a mystery to some technicians and even engineers. But once you understand the relationship between the pump and control solenoid, your diagnostic skills will grow.
Direct Fuel Injection Diagnostics
Direct injection is becoming standard on more and more late-model vehicles. These systems can be a diagnostic challenge but, with the right foundation, problems can be solved profitably.
Top EVAP Tips When Replacing Fuel Pumps
Nothing is worse that an EVAP code after a fuel pump has been replaced. Discovering that the tank needs to be dropped again to address a problem can kill shop productivity and profitability. Keep reading for tips that can help you avoid comebacks and dropping the tank for a second time.
Carter Fuel Systems Announces 11 New Part Numbers, Plans To Showcase Product Line At AAPEX
Carter Fuel Systems has announced the introduction of 11 new part numbers, including five fuel pump module assemblies, three fuel pump tank seals, two direct injection high-pressure fuel pumps and an electric fuel pump. These new part numbers target late-model applications and extend Carter’s coverage to reach more than 1.3 million additional passenger vehicles. “As
Pulse-Width Fuel Pump Diagnostics
You will see only one fuel line going to the fuel rail on most late-model vehicles. Instead of using an engine vacuum routed to a pressure regulator under the hood, returnless systems use engine data and vary the speed of the electric pump to meet fuel pressure and volume requirements without having to bleed off and return it to the tank when the engine does not need it.
Smart Fuel Pump Diagnostics
If you are diagnosing a “cranks but does not run” or a “lean/stumbling under load” complaint, your first instinct might be a problem with the fuel pump. But, how do you assess the condition of the fuel pump without taking it apart?
Volkswagen, Audi Direct Fuel Injection System
For the past decade, almost every vehicle that Volkswagen and Audi has sold in the U.S. has been equipped with direct fuel injection. These FSI, TSI and GDI systems allow for better fuel economy and power. The switch to direct injection has also allowed Volkswagen to downsize its engines from 2.0L to 1.4L on base models without losing any power, while still improving fuel efficiency.
